Comment 76 for bug 500069

No no, I checked that several times

2012/4/2 Marius Kotsbak <email address hidden>

> Are you sure that this is not caused by the USB media mounted with
> "sync" option? (check with the "mount" command). I had the problem that
> Ubuntu mounted with sync and experienced this behavior.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (477843).
> https://bugs.launchpad.net/bugs/500069
>
> Title:
> USB file transfer causes system freezes; ops take hours instead of
> minutes
>
> Status in The Linux Kernel:
> Confirmed
> Status in “linux” package in Ubuntu:
> Triaged
> Status in “linux” package in Fedora:
> Unknown
>
> Bug description:
> USB Drive is a MP3 Player 2GB
>
> sbec@Diamant:~$ lsusb
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 002: ID 046d:c50e Logitech, Inc. MX-1000 Cordless Mouse
> Receiver
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 001 Device 004: ID 0402:5661 ALi Corp.
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> sbec@Diamant:~$
>
> Linux Diamant 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:54:29 UTC
> 2009 i686 GNU/Linux
> Ubuntu 2.6.31-15.50-generic
>
> to test, i issued dd command:
> dd if=/dev/zero of=/media/usb-disk/test-file bs=32
>
> while dd is running i run dstat.... this is in the log file attached.
>
> other logs are also in the tar.gz file...
>
> there is a huge USB performance Bug report #1972262. this Report is
> something simular
>
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